Author Topic: Fork Ear/Headlamp bracket dimensions on a 500?  (Read 994 times)

Online McCabe-Thiele (Ted)

  • Grogu
  • *
  • Posts: 8160
    • View Profile
Fork Ear/Headlamp bracket dimensions on a 500?
« on: July 30, 2024, 05:19:11 PM »
Can someone please advise me as to the distance (measuring at 90 degrees to the forks) between the centre of the fork tube and the hole for the headlamp mounting bolt in cms or mm.

I am not fitting gaiters I'm thinking of changing my existing headlamp bracket arrangement as the clamp brackets I suspect will  be too close to the petrol tank.

I have a feeling someone makes an aftermarket version that clamps to the forks with solid sides. Links welcome.
« Last Edit: July 30, 2024, 05:34:03 PM by McCabe-Thiele (Ted) »
Honda CB400NA Superdream (current money puddle)
Honda CB500 K1 (second money pit)
https://www.sohc.co.uk/index.php/topic,28541.0.html
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
This is a neat 500 restoration in the USA.
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

Offline SteveW

  • SOHC Pro
  • Posts: 702
    • View Profile
Re: Fork Ear/Headlamp bracket dimensions on a 500?
« Reply #1 on: July 30, 2024, 07:41:48 PM »
I can measure mine in the morning if that’s any good?
1974 CB550 K0
1980 CB650
2000 CBR929RR Fireblade
1966 Lambretta LI150 Series 3
1981 RD350LC
1972 Raleigh Chopper
1974 Raleigh Tomahawk
2011 Henry Hoover

Online McCabe-Thiele (Ted)

  • Grogu
  • *
  • Posts: 8160
    • View Profile
Re: Fork Ear/Headlamp bracket dimensions on a 500?
« Reply #2 on: July 30, 2024, 08:35:00 PM »
Thanks no rush as I'm currently sorting out a couple of striped carb bowl threads.

I should have measured my old ones before I gave them away.
They were rotted out internally as well as rusty.
Honda CB400NA Superdream (current money puddle)
Honda CB500 K1 (second money pit)
https://www.sohc.co.uk/index.php/topic,28541.0.html
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
This is a neat 500 restoration in the USA.
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

Offline SteveW

  • SOHC Pro
  • Posts: 702
    • View Profile
Re: Fork Ear/Headlamp bracket dimensions on a 500?
« Reply #3 on: July 30, 2024, 09:08:41 PM »
This is one of a pair I’ve had for years, not sure what year they are off but was told they are 500/550.
Centre of fork tube to centre of headlight fixing hole is 115mm.

My 550 K0 ones look different to the one in the picture, they are aware being chromed at the moment.
1974 CB550 K0
1980 CB650
2000 CBR929RR Fireblade
1966 Lambretta LI150 Series 3
1981 RD350LC
1972 Raleigh Chopper
1974 Raleigh Tomahawk
2011 Henry Hoover

Offline mickwinf

  • SOHC Master
  • Posts: 1803
    • View Profile
Re: Fork Ear/Headlamp bracket dimensions on a 500?
« Reply #4 on: July 30, 2024, 09:17:43 PM »
steve they look like f2 or k3 550 items.
Love the 500 and 550 have a 500 called Lazarus under restoration

Offline Murf

  • SOHC Member
  • Posts: 115
    • View Profile
Re: Fork Ear/Headlamp bracket dimensions on a 500?
« Reply #5 on: July 30, 2024, 09:59:05 PM »
They look like the ones on my 550 K1 only better  and without the dents 😂,  If you ever want to sell I would be interested. 

Online McCabe-Thiele (Ted)

  • Grogu
  • *
  • Posts: 8160
    • View Profile
Re: Fork Ear/Headlamp bracket dimensions on a 500?
« Reply #6 on: July 30, 2024, 11:41:32 PM »
Thanks Steve that figure gives me a basepoint as a minimum.
My existing brackets give me 125 mm - my issue is likely to be tank clearance due to the thickness of the existing clamps. Last thing I want to do is mess up the new tank paint job.


Update

To my surprise plenty of clearance between the headlamp fork clamps & the petrol tank.
« Last Edit: October 10, 2024, 07:19:58 PM by McCabe-Thiele (Ted) »
Honda CB400NA Superdream (current money puddle)
Honda CB500 K1 (second money pit)
https://www.sohc.co.uk/index.php/topic,28541.0.html
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
This is a neat 500 restoration in the USA.
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

 

SimplePortal 2.3.5 © 2008-2012, SimplePortal